Aggregator

Log Number: 4472861Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: Destination Masking to: Inj500KeV
User: lrichard

Log Number: 4472859Logbook(s): 

• ELOG
• SRFLOG

Body: 

0L03 - Vibration isolation block setup

2L25
- 2L25A and 2L26A girder connections made
- NEG activation and leak check slated for tomorrow morning

VDP1L27 - Activation cart ready for NEG reactivation tomorrow

1L13 - scroll pump swapped

Log Number: 4472858Logbook(s): 

• ELOG
• RFLOG

Body: 

1L05
Cavity 3 = Replaced the filament to resolve the read back issues.
Cavity 8 = Discovered the fiber was disconnected on the AIB side preventing read backs for the cavity. Fiber installed and read backs appeared.
1L10
Cavity 8 = Filament board installed.
1L21
Cavity 5 = Installed 2.5W Amp, Filament Board, and Mod Anode board so the cavity can get turned over to SRF for troubleshooting the longstanding Arcing issue.

Techs: Evonda V., Gunner K., Alex S. and Adam S.

Log Number: 4472856Logbook(s): 

• ELOG

Body: The following Bypassed Interlock had it's Expected Removal Date changed in the Accelerator Bypassed-Interlocks Log (ABIL) Previous Expected Removal Date: 25 Feb 2026 New Expected Removal Date: 24 Aug 2026 Who made the change: king Justification for the change: C50-12 cryomodule is still installed in this zone.

Log Number: 4472855Logbook(s): 

• ELOG

Body: 

New labels have been applied to the Run Safe boxes in the Injector and NL. A walkthrough was performed in both NL and SL to verify that all BLMs are properly positioned and securely tied down.

Log Number: 4472854Logbook(s): 

• ELOG

Body: 

DecaRad system removed from 1L25 and moved to 2L25 to support C100-08 commissioning.
2L25 Readbacks are via the 2L25 C100 RF Expert screen/RF DecaRAD, (Rf12ExpertMenu.edl)
__Drad Ch.__ /__Location__
R2PXDRAD01 2L25 WG 1
R2PXDRAD02 2L25 WG 2
R2PXDRAD03 2L25 WG 3
R2PXDRAD04 2L25 WG 4/5
R2PXDRAD05 2L25 top cl
R2PXDRAD06 2L25 WG 6
R2PXDRAD07 2L25 WG 7
R2PXDRAD08 2L25 WG 8
R2PXDRAD09 2L25 Supply (US) BL
R2PXDRAD10 2L25 Return (DS) BL
R2PXDHVMON
13:45- 2L25 Ch.2 appears to have died while ch.9 was being replaced.

Log Number: 4472853Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: RF was turned on in:
R12
R14
R17
R18
R19
R1B
R1D
R1E
R1F
R1G
R1H
R1I
R1K
R1N

Log Number: 4472852Logbook(s): 

• ELOG
• RFLOG

Tags: 

• Autolog

Body: 

The following cavity histories have been updated:
1L21-5
Username: alexs
Date/Time: 02-24-26_15:55:02
RF Status: Bad
Tuner Status: Good
Comment: Rails KMAI when turning on HV. Will ned to re-isolate and check mod anode board + connections
Special Instructions:

Maintenance Tag: Component: Mod Anode Board

Log Number: 4472851Logbook(s): 

• ELOG

Body: 

I checked all installations, I had to reconnect cables for the different U-Tubes that were serviced this SAM.

This is the North Linac Summary: NL04 (OK), NL05 (OK), NL06 (OK), NL08 (OK), NL09 (re-connected cable), NL10 (re-connected cable), NL11 (cable need termination), NL13 (cable needs termination), NL21 (re-connected cable), NL23 (OK), NL24 (OK), NL25 (OK), NL26 (OK).

Log Number: 4472849Logbook(s): 

• ELOG
• RFLOG

Tags: 

• Autolog

Body: 

The following cavity histories have been updated:
2L16-6
Username: kerns
Date/Time: 02-24-26_15:44:40
RF Status: Bad
Tuner Status: Good
Comment: Needs 2.5 W amp found weak after RFCM replaced.
Special Instructions:

Maintenance Tag: Component: 2.5W Amp

Log Number: 4472848Logbook(s): 

• ELOG
• RFLOG

Tags: 

• Autolog

Body: 

The following cavity histories have been updated:
2L14-6
Username: kerns
Date/Time: 02-24-26_15:42:16
RF Status: Bad
Tuner Status: Good
Comment: Needs 2.5W amp after RFCM replaced
Special Instructions:

Maintenance Tag: Component: 2.5W Amp

Log Number: 4472847Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: RF was turned on in:
R2C

Log Number: 4472844Logbook(s): 

• ELOG
• RFLOG

Tags: 

• Autolog

Body: 

The following cavity histories have been updated:
2L08-3
Username: kerns
Date/Time: 02-24-26_15:38:56
RF Status: Good
Tuner Status: Good
Comment: RF recovered to 4 Mv/m after fil. bd. replaced. RF restored to 10.7 Mv/m.
Special Instructions:

Maintenance Tag: Component: Other

Log Number: 4472841Logbook(s): 

• ELOG

Entry Makers: michaelmBody: 

RF recovery may proceed when ready - coordinate with the crew chief

Log Number: 4472840Logbook(s): 

• ELOG

Entry Makers: dthomasBody: 

Log Number: 4472839Logbook(s): 

• ELOG

Entry Makers: dthomasBody: 

Log Number: 4472838Logbook(s): 

• ELOG
• LERFLOG

Body: 
THOMAS JEFFERSON NATIONAL ACCELERATOR FACILITY
ACCELERATOR OPERATIONS CREW CHIEF SIGN IN FORM

Date : 02-24-26
Time : 15:24:51
Day : Tuesday
Shift : Swing

Crew Chief : Richardson
Program Deputy: Buttles
Team : X
Arm : RADCON
Designated SSO: Schaumloffel
LERF Operator:
Operators : Schaumloffel

This stamp certifies that the above Crew Chief has read/reviewed/received the following:

Log Number: 4472837Logbook(s): 

• ELOG

Body: 

Powered up all 10 amp trim racks in the SL. HCO completed. All magnets, except for ones located on the 2L25 and 2L26 girders, have been ran and cycled successfully. All looks well. We will get to the few remaining magnets when work on those girders are finshed.

Log Number: 4472835Logbook(s): 

• ELOG
• RFLOG

Tags: 

• Autolog

Body: 

The following cavity histories have been updated:
2L19-6
Username: kerns
Date/Time: 02-24-26_15:24:55
RF Status: Bad
Tuner Status: Good
Comment: Very weak 2.5W amp needs to be replaced after RFCM replaced.
Special Instructions:

Maintenance Tag: Component: 2.5W Amp

Log Number: 4472833Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: RF was turned on in:
R27
R2A
R2B
R2D
R2F
R2H
R2I
R2K